diff --git a/git.go b/git.go
index 722a00c..c337fbb 100644
--- a/git.go
+++ b/git.go
@@ -126,6 +126,7 @@ func (rs *RepoStatus) CheckDirty() bool {
 
 }
 
+/*
 func (rs *RepoStatus) CheckoutBranch(branch string) (string, string) {
 	// run(rs.realPath.String(), "git", "checkout " + branch)
 
@@ -134,6 +135,31 @@ func (rs *RepoStatus) CheckoutBranch(branch string) (string, string) {
 	log.Log(INFO, rs.realPath.String(), "realname =", realname, "realversion =", realversion)
 	return realname, realversion
 }
+*/
+
+func (rs *RepoStatus) CheckoutMaster() bool {
+	if rs.CheckDirty() {
+		log.Log(INFO, rs.realPath.String(), "is dirty")
+		return false
+	}
+	mName := rs.GetMasterBranchName()
+	cmd := []string{"git", "checkout", mName}
+	err, b, output := RunCmd(rs.realPath.String(), cmd)
+	if err != nil {
+		log.Log(INFO, err, b, output)
+	}
+
+	realname := rs.getCurrentBranchName()
+	realversion := rs.getCurrentBranchVersion()
+	log.Log(INFO, rs.realPath.String(), "realname =", realname, "realversion =", realversion)
+
+	if realname != mName {
+		log.Log(INFO, "git checkout failed", rs.realPath.String(), mName, "!=", realname)
+		return false
+	}
+	rs.masterBranchVersion.SetValue(realversion)
+	return true
+}
 
 func (rs *RepoStatus) checkoutBranch(level string, branch string) {
 	if rs.CheckDirty() {